INT 14H 01H: Send a Character
Expects: AH 01H
AL byte to send
DX COMM port number (0 to 3)
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Returns: AH bit 7=0 if no error;
else, bits 0-6 have Line Status see BIOS COM status codes
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Info: Transmits the character in AL over the specified COM line.
Notes: The return status code cannot indicate a time out error, since
bit 7 is used to flag any error. Thus, after any error, you
should use INT 14H 03H to get the full story on what went wrong.
See Also: INT 14H: Serial Port I/O
Asynchronous Adapter Ports
BIOS Data Area
ROM-BIOS Functions
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